diff --git a/.cargo/config.in b/.cargo/config.in
index d60f3c36cc9c..7fa81e05b905 100644
--- a/.cargo/config.in
+++ b/.cargo/config.in
@@ -9,7 +9,7 @@ replace-with = 'vendored-sources'
 
 [source."https://github.com/gankro/serde"]
 git = "https://github.com/gankro/serde"
-branch = "deserialize_from_enums3"
+branch = "deserialize_from_enums4"
 replace-with = "vendored-sources"
 
 [source.vendored-sources]
diff --git a/toolkit/library/gtest/rust/Cargo.toml b/toolkit/library/gtest/rust/Cargo.toml
index b213e06a68cd..d5f2c2b2d295 100644
--- a/toolkit/library/gtest/rust/Cargo.toml
+++ b/toolkit/library/gtest/rust/Cargo.toml
@@ -47,5 +47,4 @@ panic = "abort"
 
 [patch.crates-io]
 libudev-sys = { path = "../../../../dom/webauthn/libudev-sys" }
-serde = { git = "https://github.com/gankro/serde", branch = "deserialize_from_enums3" }
-serde_derive = { git = "https://github.com/gankro/serde", branch = "deserialize_from_enums3", feature = "deserialize_from" }
+serde_derive = { git = "https://github.com/gankro/serde", branch = "deserialize_from_enums4", feature = "deserialize_in_place" }
diff --git a/toolkit/library/rust/Cargo.toml b/toolkit/library/rust/Cargo.toml
index e9b4f48faa42..5b48dd98a911 100644
--- a/toolkit/library/rust/Cargo.toml
+++ b/toolkit/library/rust/Cargo.toml
@@ -48,5 +48,4 @@ panic = "abort"
 
 [patch.crates-io]
 libudev-sys = { path = "../../../dom/webauthn/libudev-sys" }
-serde = { git = "https://github.com/gankro/serde", branch = "deserialize_from_enums3" }
-serde_derive = { git = "https://github.com/gankro/serde", branch = "deserialize_from_enums3", feature = "deserialize_from" }
+serde_derive = { git = "https://github.com/gankro/serde", branch = "deserialize_from_enums4", feature = "deserialize_in_place" }